Zero reference pulse or Zero pulse is an artificially produced pulse in a professional television receiver imitating no radio frequency case for modulation...
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Residual carrier (section References and notes)
sync pulse and the 73% is so called back porch (black level). The duration of the signal is approximately 100 μs. Carrier wave White clipper Zero reference...
3 KB (298 words) - 00:50, 30 September 2022
measurement Frequency allocation Frequency modulation (FM) Plastic welding Pulsed electromagnetic field therapy Radio astronomy Spectrum management Jessica...
14 KB (987 words) - 21:57, 31 May 2025
shows up as colored confetti interference. In a color TV waveform, a reference pulse, called the burst, is transmitted along the back porch portion of the...
6 KB (832 words) - 04:05, 25 October 2024
Transmitter station (section References and notes)
interference Testing Distortionmeter Field strength meter Vectorscope VIT signals Zero reference pulse Artifacts Dot crawl Ghosting Hanover bars Sparklies...
6 KB (790 words) - 17:08, 16 November 2024
multiplying signal can be viewed as a square wave with a DC offset (i.e. a zero frequency component). The aim of a switching mixer is to achieve the linear...
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the "droop" seen on the top of the pulses. This "pulse distortion" can be very significant when a train of pulses must pass through an AC-coupled (high-pass...
13 KB (1,615 words) - 21:58, 6 March 2025
interference Testing Distortionmeter Field strength meter Vectorscope VIT signals Zero reference pulse Artifacts Dot crawl Ghosting Hanover bars Sparklies...
28 KB (3,071 words) - 22:57, 14 June 2025
Quadrature amplitude modulation (category Articles needing additional references from December 2018)
the expense of demodulation complexity. In particular, a DSB signal has zero-crossings at a regular frequency, which makes it easy to recover the phase...
15 KB (1,889 words) - 18:27, 29 May 2025
Composite video (category Articles needing additional references from August 2023)
to recreate a color picture, as well as line and frame synchronization pulses. The color video signal is a linear combination of the luminance (Y) of...
16 KB (1,638 words) - 15:53, 11 June 2025
PAL (category Articles needing additional references from May 2021)
colour subcarrier is added to the video signal shortly after the line sync pulse, but before the picture information, during the so-called back porch. This...
65 KB (6,770 words) - 19:23, 4 June 2025
NTSC (redirect from Vertical interval reference)
must have a zero-phase reference to replace the previously suppressed carrier. The NTSC signal includes a short sample of this reference signal, known...
90 KB (10,408 words) - 14:15, 16 June 2025
The pulses in NRZ have more energy than a return-to-zero (RZ) code, which also has an additional rest state beside the conditions for ones and zeros. When...
13 KB (1,567 words) - 09:42, 29 March 2025
Single-sideband modulation (category Articles needing additional references from July 2015)
low-frequency content (average brightness) and has rectangular synchronising pulses. The engineering compromise is vestigial-sideband transmission. In vestigial...
33 KB (4,814 words) - 03:16, 26 May 2025
Antenna (radio) (category Articles needing additional references from January 2014)
various angles, separated by "nulls", angles where the radiation falls to zero. This is because the radio waves emitted by different parts of the antenna...
83 KB (10,949 words) - 22:44, 29 April 2025
interference Testing Distortionmeter Field strength meter Vectorscope VIT signals Zero reference pulse Artifacts Dot crawl Ghosting Hanover bars Sparklies...
19 KB (2,109 words) - 13:54, 16 May 2025
Video tape tracking (category Articles needing additional references from February 2024)
the case of VHS, a linear control track at the tape's lower edge holds pulses that mark the beginning of every frame of video; these are used to fine-tune...
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Diplexer (category Articles needing additional references from January 2021)
interference Testing Distortionmeter Field strength meter Vectorscope VIT signals Zero reference pulse Artifacts Dot crawl Ghosting Hanover bars Sparklies...
9 KB (1,381 words) - 22:13, 25 November 2024
Very high frequency (category Articles needing additional references from August 2016)
Several stations, known as Frankenstations, most notably those joining the Pulse 87 franchise, have operated on this frequency as radio stations, though...
25 KB (2,877 words) - 19:15, 15 April 2025
Intercarrier method (category Articles needing additional references from November 2009)
interference Testing Distortionmeter Field strength meter Vectorscope VIT signals Zero reference pulse Artifacts Dot crawl Ghosting Hanover bars Sparklies...
4 KB (594 words) - 20:20, 7 November 2023
Pulse-width modulation (PWM), also known as pulse-duration modulation (PDM) or pulse-length modulation (PLM), is any method of representing a signal as...
29 KB (4,017 words) - 20:51, 8 June 2025
Frequency modulation (category Articles needing additional references from November 2017)
particular values of the modulation index, the carrier amplitude becomes zero and all the signal power is in the sidebands. Since the sidebands are on...
31 KB (4,003 words) - 13:29, 24 May 2025
interference Testing Distortionmeter Field strength meter Vectorscope VIT signals Zero reference pulse Artifacts Dot crawl Ghosting Hanover bars Sparklies...
9 KB (1,014 words) - 20:10, 7 December 2024
address this, was selected as the winner. Audio is encoded using 14 bit pulse-code modulation at a sampling rate of 32 kHz. NICAM's second role – transmission...
21 KB (2,623 words) - 00:52, 16 June 2025
Colorburst (category Articles needing additional references from September 2014)
superheterodyne conversion. Camera control unit Color framing Color killer Sync pulse Glossary of video terms Brown and Luck (June 1953). "PRINCIPLES AND DEVELOPMENT...
10 KB (844 words) - 06:38, 27 November 2024
Path loss (category Articles needing additional references from August 2017)
interference Testing Distortionmeter Field strength meter Vectorscope VIT signals Zero reference pulse Artifacts Dot crawl Ghosting Hanover bars Sparklies...
12 KB (1,801 words) - 21:55, 2 December 2024
interference Testing Distortionmeter Field strength meter Vectorscope VIT signals Zero reference pulse Artifacts Dot crawl Ghosting Hanover bars Sparklies...
3 KB (281 words) - 15:54, 24 February 2024
Film frame (category Articles needing additional references from May 2013)
List of film formats Shot (filmmaking) Slow motion Thumbshot Widescreen Reference Data for Radio Engineers, ITT Howard W.Sams Co., New York, 1977, section...
14 KB (2,000 words) - 01:37, 13 May 2025
interference Testing Distortionmeter Field strength meter Vectorscope VIT signals Zero reference pulse Artifacts Dot crawl Ghosting Hanover bars Sparklies...
11 KB (827 words) - 08:26, 27 October 2023